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- Title
Influence of Annealing Temperature on the Magnetic Properties of One-dimensional Diluted Magnetic Semiconductor Zn<sub>0.95</sub>Mn<sub>0.05</sub>O Tuning with Vacuum Atmospheric Annealing.
- Authors
Dong, Licheng; Liu, Chunmei; Shen, Zhe; Zhou, Bangfei; Zheng, Tianxiang; Li, Qiang; Zhong, Yunbo
- Abstract
Zn0.95Mn0.05O nanorods were synthesized via hydrothermal process and then treated with vacuum atmosphere annealed at different temperatures. Effects of annealing temperatures on microstructure, relative concentration of oxygen vacancy (VO), and magnetic properties were studied. SEM images clarified that the length and width of nanorods increased, while the aspect ratio decreased with increasing annealing temperatures. The elemental mappings showed that Mn was homogeneous without any Mn-rich wurtzite clusters. XRD and XPS results revealed that Mn ions had been introduced in wurtzite ZnO lattice and there were not any second phase observed. Furthermore, more VO had been produced in the samples as the annealing temperature increased. Finally, magnetization measurements implied that all of the Zn0.95Mn0.05O nanorods were ferromagnetism at room temperature. The saturated magnetization (Ms) of the unannealed samples was about 34.5 memu/g. When the nanorods were annealed under vacuum atmosphere, Ms became 35.5, 37.5, 50.5, and 71.6 memu/g, respectively, which corresponded to the annealing temperature of 100 ℃, 300 ℃, 500 ℃, and 700℃. The annealing temperature could significantly improve the magnetism of the products.
- Subjects
DILUTED magnetic semiconductors; MAGNETIC properties; MAGNETIZATION measurement; TEMPERATURE; SCANNING electron microscopy
- Publication
Journal of Superconductivity & Novel Magnetism, 2023, Vol 36, Issue 1, p189
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-022-06451-x